Here is an overview of Expansion I, via Deep Silver:
The first story players will follow, The Two Colonels, is that of Colonel Khlebnikov, just below the surface, under the dead city of Novosibirsk, as he makes his way home to his son, Kirill, for New Year’s Eve.
But all is not well with the people here: the slime is further consuming the tunnels, mutant attacks appear to be on the rise and the precious ‘green stuff’ that protects the people from radiation poisoning is running low. In order to secure the survival of the people, those in charge may need to take drastic measures …
Following the journey and experiences of Khlebnikov during the last days of life in Novosibirsk, which Colonel Miller retraces a year later, players can expect the classic story-driven gameplay of the Metro series in this new linear chapter, complete with a brand new weapon, the deadly flame-thrower; claustrophobic environments; and the all-too-familiar hair-raising tension.
Watch a trailer for Expansion I below. View a set of screenshots at the gallery.